Cop skewer for replenishing loom shuttles



May 28, 1929. F. E. DOUGLAS 1,715,002

COP SKEWER FOR REPLENISHING LOOM SHUTTLES Filed Nov. 29, 1927 /JTTORNEY Patented May 28, 1929.

UNITED vSTATES, PATENT orFlcE,

FREDRIC E. DOUGLAS, OFKHOPEDALE, MASSACHUSETTS, ASSIGNOR T0 DRAPER COR-- 0F HOPEDALE, MASSACHUSETTS, A CORPORATION OIE' IIVIAINE.l i

PORATION,

COP SKEWER FOR REPLENSHING LOOM'SHUTTLES.

Application med November 29, 1927. serial No. 236,460.,

lThis invention relates to thread carrier supports for automatically replenishing shuttles and is more particularly directed to that type of carrier supports wherein a cop skewer is en'iplovyed for holding a wound cop during weaving.

It is now the common practice to wind cops on paper tubes, usually of less length than the cop itself, and to support the cop upon a skewer which may be detachably supported in the shuttle during weaving, to permit replenishment. The cop skewers heretofore employed have usually comprised spring members by slitting the skewer longitudinally and merging the slit gradually into the skewer at each end. The difiiculty with this has been Vthat whenA the wound cop is placed upon the skewer, the paper cop tube itself is not securely held upon the skewer by reason of the substantiel non-expansibility' of the spring members at the part of the slrewer engaged by the paper tube, with the result that during weaving and especially when the shuttle is picked or is suddenly arrested at'the ends of its flight, the cop is liable to be diS- placed upon the skewer. Attempts have been made to remedy this defect by forming shoulders on the spring members of the skewer, which shoulders have been disposed substantiallyat right angles to the axis of the skewer. rllhis has led to difliculties in removing the depleted cop from the skewer, because the end windings of the depleted cop are liable to catch upon the transversely extending shoulders.

During weaving the end windings of the cop are liable to slough or become displaced upon the skewer by the shocks to which the shuttle is subjected and the rapid unwinding of the cop as the shuttle is picked, and the present Vinvention seeks to provide a' cop slewcr which shall overcome the difficulties heretofore experienced in this type of filling or thread carrier and to provide acop slrewer of the longitudinally slit type which shall act efficiently to hold the wound cop inplace upon the slrewer during weaving without sloughing of the end windings thereof, and yet permit the depleted cop to be removed from the skewer when it has been ejected from the shuttle,

An important feature of the present invention therefore consists in a cop skewer having a head provided with rings for engagement with the Jaws of an automatlcally replenishing shuttle in which the slrew'er is used, and providing the skewer with a longitudinal opening vfrom the Vhead towards lthe tip of'the skewer vto form spring members of wide separation throughout their length, to the end that the paper cop tube and copwindings may be securely held throughout their length by the resiliency of the spring members when the cop is in place upon the spindle.

Another important feature of the invention consists in forminga bulge or enlarge'- inent tipward of the cop windings. when the copis in place upon the slrewer spindle to prevent endwise movement of the cop on the spindle and sloughing of the end windings during weaving. i

Still another important feature of the invention consists in providing the spring members with diagonally extending shoulders of varying height, so that the end portions of the shoulders merge into the edge portions of the spring members, with the result that when the depleted cop is removed endwise from the skewer, the interior windings will climb up the shallow portion of the edge diagonally, without disturbing the windings,

and permit the depleted cop to be removed in-v tact from the spindle.

The various features of the invention and new combination of parts will best be made clear from the following description in connection with: the `accompanying drawings which disclose one good practical form of the invention.

In the drawings;

Fig. l is a plan view of a filling replenishing loom shuttle provided with av thread carrier containing the present invention;

Fig. 2 is an enlarged side elevation of the cop skewer made in accordance with the present invention with the head thereof omitted;

Fig. 3 is a side elevation of a skewer con-v taining the present invention, the'head and windings being shown in sect-ion;

Fig. 4 is a side elevation of the cop skewer showing the depleted cop in section; and

Fig. 5 is aside elevation of a'portion of the cop skewer at right angles to that shown in Fig. 4l, and'sho'wino'inoie particularly the diagonal shoulders fbrmed on the spring members. Y

The shuttle l is provided with the bobbin chamber 2, the threading block 3 and side delivery eye 4 andlat the end opposite the threading block the shuttle is provided with gagedrby the paper the usual holding jaws 5 adapted to detachably engage the head ofthe skewer, as will presently appear.

The head of the skewer comprises the lou,- gitudinally split wooden sections 6 and 7 within which is the bushing 8 having projecting portions 9 which engage complementary recesses in the interior of the wooden sections 6 and 7, and a band 10 surrounding the wooden sections 6 andv7 serves to hold the wooden sections to the bushing. Extending about the wooden sections of the head are the rings 11, three being vshown in the present instance of the invention, which `contribute to hold the wooden sections to thev bushing and provide the holding'rings for engagement by the jaws 5 within the shuttle. The bushing 8 is provided with an opening 12 and into the opening 12 extends the. skewer spindle 13, the end portion 14,01' which is secured to the bushing 8. As i dicated, in the present invention the spindle 13 has its exterior end portion 15 upset upon the exterior portion of the bushing8, and a shoulder 16 engages the inner wall of the bushing 8 whereby the spindle is rigidly connected to the head.

The spindle 13 has an opening 17 extending longitudinally thereof` from the head to a point adjacent the tipv end of the spindle and^,vas indicated in Fig. 2, the opening 17 provides the two spring members 18 which are widely separated throughout their entire length.; the result being that the portion 19 of the spring members 18 whichare entube 2() whenthe cop is in place, acts expansively upon the entire longitudinal length of the paper tube and also upon the interior windings of the cop throughout its length to maintain the cop in place on the skewer notwithstanding the shocks to which the shuttle is subjected as it is picked and is arrested` at the end of its flight. As indicated in Fig. 3, the opening 17 preferably extends into the cavity 12 of lthe bushing 8, so that the resiliency ofthe spring members 18 is maintained throughout the entire length of the paper tube and cop windings.

When the wound cop is in place upon the skewer it is desirable that the end windings of the cop towards the tip of the spindle shall be held from movement longitudinally towards the tip or from sloughing and snarling during weaving, and to this end the present E5 invention contemplates the formation of a bulge tipward of the end windings ofthe cop, as indicated in Figs. 3` and 4, where the bulge is shown somewhat exaggerated inorder to make clear this feature of the invention. The bulge, indicated at 21, Figs. 3 and 4, may be variously contrived, but in the present instance ofthe invention the tip end portions 22 of the spring members 18 are rendered less resilient by thickening the walls of the spring members, so that when the wound `copvis moved endwise on to the skewer, the portion of the spring members 18 towards the head of the skewer will yield inwardly by flexing, at substantially the points 23, at the terminal portions of the thickened walls 22. l

Additional means may be employed to insure the formation of the bulge 21 and the less resiliency of the portions 22 of the spring members by a spacer or plug 24 inserted in the terminal tip portion of the crotch between the members 22.

As hereinbefore indicated, each of the spring members 18 has diagonally extending shoulders 25, the terminal end portions of which at 26 merge into the edges of the spring members 18, with the result that when a depleted cop is moved endwise of the skewer, the endV windings still remaining on the cop will climb up the advanced'v edge of the diagonal shoulders 25` andfinally over the top thereof without obstruction or entanglement therewith. The diagonal shoulders 25` are preferably not continued transversely of the spring members 18 towards the head of the skewer but terminate atV a point tipward of the depleted cop, as indicated in Fig. 4, so that upon the first movement o f the 'cop lengthwise of the skewer, the end windings will move along the smooth exterior surface of the spring members 18 and thereafter will ride up the shoulders 25 without obstruction as the depleted cop is removed from the skewer.

From the construction described asa good practicall form of the present invention, it will be noted that the paper cop tube andthe interior windings of the cop itself are su ject to the expansive action of the spring members throughout the entire length of the tube and windings of the cop when the latter is in place, so that displacement of the cop upon the skewer, incident to the shocks occurring during the weaving operation` is entirely overcome and by theformationof the bulge. at the tip end portion of the Vslewer all sloughing of the end windings of the cop ork movement ofV the cop longitudinally towards the tip of the skewer is avoided. It will be noted that the heady terminall end of the slrewer spindle opening. 17 has a cross shouldered portion or crotch 27 inter osed between and separating the spring mem ers and when the cop tube 20 is pushed-to place the widely separated parts 19 of the spring members 18 will act expansively throughout the length of the paper cop tube to effectively retainthe aper tube in place on the skewer, notwithstanding the sudden shocks to which the shuttle is subjected during the weaving operation. As shown, the Icrotch 27 is within the opening 12 'ofy the bushing 8 t-oinsure that the expansive action of the parts 19 will be mznifested throughout the length of the cop tu e.

Vhat is claimed is 1. A cop skewer for filling replenishing loom shuttles, comprising a head having rings for engagement with the aws of a replenishing shuttle, and a spindle secured to the head and having a longitudinally extending openinO' the head terminal of which has a cross shoulder or bridge between and forming spring members of wide separation throughout that portion of the spindle that is embraced by the paper cop tube when the latter is in operative position on the slrewer that the expansive action of the slrewer may be exerted uniformly throughout the entire length of the paper cop tube to maintain it in fixed position on the skewer during weaving.

2. A cop slrewer for filling replenishing loom shuttles, comprising a head having rings for engagement with the jaws of a replenishing shuttle, and a spindle secured to the head and having a longitudinally extending opening the head terminal of which has a cross shoulder or bridge between and forming spring members of wide separation continued from a point within the head beyond the inner end of the paper cop tube when it is in operative position on the skewer to a point adjacent the spindle tip that the spring members may act with uniform expansion throughout the entire length of the paper cop tube when the wound cop is in place upon the skewer.

3. A cop skewer for filling replenishing loom shuttles, comprising a head having rings for detachable engagement with the aws of a replenishing shuttle, a split spindle secured to the head and forming spring members of wide separation from the head to a point adjacent the tip of the spindle, and means for holding the tip end portion of the spring members in substantially their wide separated relation when a wound cop is forced to place upon the spindle to thereby form a bulge tipward of the cop windings and prevent movement of the cop windings towards the tip of the spindle during weaving.

.41. A cop skewer for filling replenishing loom shuttles having a head provided with rings for detachable engagement with the aws of a replenishing shuttle, a split spindle secured to the head and forming spring members of wide separation from the head tipward of the spindle, and a bulge formed by the spring members tipward of the wound cop when forced upon the spindle to prevent tipward displacing movement of the cop windings during weaving.

5. A cop slewer for filling replenishing loom shuttles having a head provided with rings for detachable engagement with the jaws of a replenishing shuttle, a split spindle secured to the head and forming spring inembers of wide separation fromthe head tipward of the spindle, a bulge formed by the spring' members tipward of the wound cop when forced upon the spindle to prevent tipward displacing movement of the cop windings during weaving and a series of shoulders diagonally arranged on the surface of the spring members.

6. A cop skewer for filling replenishing loom shuttles having a head provided with rings for detachable engagement with the jaws of a replenishing shuttle, a split spindle secured to the head and forming spring members of wide separation from the head tipward of the spindle, and a smooth surfaced bulge formed by the spring members tipward'of the wound co-p when forced upon the spindle to prevent tipward displacing movement of the cop windings during weaving.

7. A cop skewer for filling replenishing loom shuttles having a head provided with rings for engagement with the jaws of a replenishing shuttle, a spindle secured to the head and having an opening forming spring members of wide separation from the head to a point adjacent the tip of the spindle, and forming a smooth-surfaced bulge tipward of the cop windings, and a series of 'diagonally arranged shoulders on the exterior surface of the spring members between the smoothsurfaced bulge .and the paper cop tube that the latter and the windings of the depleted cop may be removed endwise of the spindle without obstruction.

8. A cop skewer for filling replenishing loom shuttles having a head provided with rings for engagement with the jaws of a replenishing shuttle, a spindle secured to the head and having an opening forming spring members of wide separation from the head to a point adjacent the tip of the spindle, and forming a smooth-surfaced bulge tipward of the cop windings, and a series of diagonally arranged shoulders of diminishing height towards the edges of the spring members between the bulge and paper cop tube that .the latter and depleted cop may be removed endwise of the spring members without disturbing the windings of the cop.

In testimony whereof, I have signed my name to this specification.

FREDRIC E. DOUGLAS. 

